Merge pull request #1277 from danieldresser-ie/wextra2

Fix More Compile Issues With -Wextra

Author: johnhaddon

src/IECoreMaya/ImageFile.cpp

@@ -290,8 +290,10 @@ MStatus ImageFile::glLoad( const MImageFileInfo& info, unsigned int idx )
 	{
 		case 3:
 			glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, m_width, m_height, 0, GL_RGB, GL_FLOAT, &pixels[0] );
+			break;
 		case 4:
 			glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, m_width, m_height, 0, GL_RGBA, GL_FLOAT, &pixels[0] );
+			break;
 		default:
 			assert(false);
 	}

src/IECoreNuke/DisplayIop.cpp

@@ -65,7 +65,7 @@ using namespace Imath;
 typedef LRUCache<int, DisplayDriverServerPtr> ServerCache;
 
 // key is the port number for the server.
-static DisplayDriverServerPtr serverCacheGetter( int key, size_t cost )
+static DisplayDriverServerPtr serverCacheGetter( int key, size_t &cost )
 {
 	cost = 1;
 	return new DisplayDriverServer( key );

src/IECoreNuke/FromNukeCameraConverter.cpp

@@ -79,6 +79,7 @@ IECore::ObjectPtr FromNukeCameraConverter::doConversion( IECore::ConstCompoundOb
 		case DD::Image::CameraOp::LENS_RENDER_CAMERA :
 			msg( Msg::Warning, "FromNukeCameraConverter::doConversion", "Unsupported projection type - reverting to orthographic" );
 			// fall through to orthographic code
+			[[fallthrough]];
 		case DD::Image::CameraOp::LENS_ORTHOGRAPHIC :
 		{
 			result->setProjection( "orthographic" );